A link in a chain is always something in the middle linking one end of a chain to the other. But since scientists don't know who the common ancestor is, then they only have one end of the chain, namely, humans, not both. So until they know who the common ancestor is, they can't possibly know what the links of the chain lead to on the other end!
Thus, they find any bones they want to and claim it's the missing link.
the latest "missing link" looks more like a lizard than a human.
So are they now claiming that a giant lizard was the common ancestor?
Or, since they don't know who the common ancestor is, because he's as imaginary as each individual imagination then they can claim that the bones of any animal is the common ancestor?
Or can they just plain claim anything they want to since the world believes they're infallible gods because they have degrees? I suspect it's the latter. 
Thus, they find any bones they want to and claim it's the missing link.


